Means for intensifying reproduced tones



Feb. 16 1926. 35573265 J. MERSMAN MEANS FOR INTENSIFYING REPRODUCED TUNES Filed Jan. l0, 1922 @www Patei'ited Feb. iti, '1925.

JOSEPH MERSMAN, O OTTAXVA, OHIO.

Application filed Ja `To @ZZ who/m, t may concern.'

Be it known that l, Josnrir Miiasiimn, a citizen of the United States, residing in the toivn of ttavva, in the county of Putnam and State of Qhio, have invented a eert-ain new and useful improvement in Means for intensifying Reproduced Tones, of `which the followingl is a specification.

The principal object of my invention is to provide new and improved means for intensifying reproduced tones, and to step by step harmonize ail the different elements that enter into the recording, reproducing and amplifying of tone.

ldy invention makes it possible to construct the an'iplifying medium of the same material of which the diaphragm of the recording and reproducing device is constructed, Whether it be mica, glass or some composition material. This insures harmony at every step from the recording of the record to the reproduction and amplili cation of the tone recorded.

Heretofore, a great deal of attention has been given to perfecting the reproducei of phoiiograplis, but very little attention has been given to the creation of perfect hariiioiiy betvveenthe different elements that enter into the mechanical reproduction of tone.

rihe manufacturer of records in some cases Will use a glass diaphragm in the recordiiig device, and when the completed record reaches the dealer he Will play it on a machine that has a mica diaphrao'm in the reproducer; and as it continues on its ivay, the reproduced sound passes into a wood or metal horn, all three steps being1 of a diirereiit nature and none of them alike as to sensitiveiiess. Accordingly, each vvill bring out the tone step by step different v from the original. tone recorded. Therefore, in the confusion which results, tones that were originally recorded are lost, While others have been so changed that they issue in a harsh blasting manner. My invention overcomes all of the above objectionable features by producing a clear musical tone that is pleasing to the ear, and provided that the materials used are uniform, a rea production is assured.

My invention consists iii interposing in the path of the molecules of air set iii mo tion by the reproducer, a device preferably of the same form as shown in the drawings, having` sides composed of a sensitive mat-e- GG SIGNES.

rial that is preferably the same as that used iii the diaphragm of the iecorr nig and relhis amplifying device may be round, square or of any other shape, and may be enclosed iii a protecting tube or it .may itself forni the outside Walls of the sound conducting means.

it is to be borne iii mind that my iinproved aiiiplifying means is different from 1id Figure o is an end vievv of device, 'protecting tube and all others in that it takes the place of, and

tone ariii. Thus the tone Waves act on the amplifier Without passing t is used iii the ordinary phono- Yraph. ouiid vvaves which enter a neck .ious vibrations before those sound ivaves enter the amplifier proper. lt is the of this invention to eliminate everything that can in any vvay affect the tone in the accoii'ipaiiyiiio drawings, Figure l is a. top plan vieiv oi" the reproducer and awa-y to reveal the insertible amplifying device. Figure is a side elevational viev,y

the aiiipiifjy i g shifting means.

ings, sii AAar reference characters denote corresponding parts.

unici al i designates a turntable upon which here mounted record 2. Resting upon lie latter is the stylus o contains a reproducing diaphragm 5.

- ecY piece 6 to a resonating tube 7. The zitter consists of a hollow cylinder conrably closed at its rear end by a head S,

Adapted to be inserted in the resonating tube 7, which forms a protective cover for section, although it may be of any other suitable shape. This frame consists of tWo although they may be made of mica or like material. rIhese side members have grooved members il, ll preferably constructed of the saine material of which the diaphragm does avfay with, that part usually known as a tone arni and the usual neck or or tiri-oat of nood, ust-.ally set up or produce obje t t vi brations adversely.

the protecting tube, vvith the latter broken thereof. if'

Vfhroughont the specification and drawn `Lne accomiaiiying drawings, the

" of a sound box -i sound box is connected by a hollow tr`icted of any suitable material and .prefand containingl sound-emitting` holes o it`r is an elongated fra-me 9 square in cross side members 10, l0 constructed of metal,

edge portions to receive top and bottoni 5 is made, being iii this instance mica. The

edge portions of the frame thus described are covered with longitudinal strips l2 ot' felt or other soit material to give said traine a. reiatively tight it Within the protecting tube 7.

For the purpose of shifting the frame 9 back andtorth Within the protecting tube 7 so as to increase or modi'ty the tones emitted through the holes 8a, the following means are provided. Formed in the Wall ot the protecting tube 'l' is an elongated slot 13. Lonp'itudinally novable through the latter is a pin lllu'hich projects outwardly from one ot the sides l oit the trame 9 and which is preferably covered with sott material to prevent rattling. The pin le has a large head that is adapted to be grasped by the lingers to shift the trame 9 to a desired position within the protectingl tube 7. In those cases where it is desired to dispense with the insertible tra-me and make the Walls oi the tube 7 ot' mica, the neel; piece G may be made to telescope into it to iicrease or lessen the tone as in the case oi the shiitable amplifying frame.

Projecting downwardly from the middle portion ol` the resonating tube 7, is a lugl l which is pivotally secured by a pin 16 to the upper portion ot a supporting post 17. (See Figure 2.)

The amplitying rame which I have described and illustrated may be easily and economically manufactured, and insures a proper reproduction ot the recorded tones. In other Words, it insures harmony at every step from the recording ot the tones to the repro-duction and amplification of the tones recorded.

Having described my invention, I claim:

l. rilhe combination with a reproducer, and adiaphragm, of a resonating tube communicating at one end with the reproducer, and a longitudinally positioned vibrator in the resonating tube ot the same material as tbe diaphragm of the reproducer.

il. rThe combination with a sound box, a diaphragm in the sound box, and a resonab ing tube comnninica'ting at one end with the sound box, of a support in the resonating tube, and a plurality of parallel longitudinally positioned vibrators carried by the support and of the same material as the diaphragm of the sound box.

The combination with a sound box, and a diaphragm in the sound box, o1 a resonating tube "flosed at one end and at its other end communicating with the sound box, said resonatinp, tube having outlet oritices in its side Walls adjacent its respective ends, and a longitudinally positioned vibrator of the same material as the diaphragm supported in the resenating tube between the sets of orifices.

el. The combination with a sound box, and a diaphragm in the sound box, oi" a resonating tube closed at one end and at its other end connnunicating with the sound box, said resonatinfg` tube having outlet orilices in its side walls adjacent its respective ends, a longitudinally adjustable support in the resonatingI tube between the sets ol orifices, and a pai r ot' vibrators mounted in the support and ot the same material as the diaphragm.

The combination with a sound box, and a diaphragm in the sound box, 0lE a resonating tuber close-d at one end and at its other end eonmiunicating with the sound box, said resonating tube having outlet ori'lices in its side Walls adjacent its respective ends, a longitudinally adjustable support in the resonating tube between the sets olf oriiices, and a pair ol vibrators mounted in theV support and ot the same material as the diaphragm, said resonating tube being circular in cross section and said support with the vibrators constituting a rectangular structure in cross section.

G. The combination ol a diaphragm and a resonator comprising` a tribe, a plurality ot vibrators mounted in the tube, said vibrators being formed oli the same materials as the diaphragm.

7. The combination ol a diaphragm 'formed ot mica and a resonator comprisingr a tube, a plurality ol mica vibrators located in spaced relation and longitudinally within the tube, and means for rigidly supporting the vibrators at their longitudinal edges.

In testimony whereof I have hereunto set my hand this 4th day ot January,

JOSEPH MEI'SMAN. 

